By combining traditional phone service with the ability to make and receive high quality Internet calls, the Call-in-One, developed and manufactured by Leadtek Corporation, gives users the ability to do free Internet calling without interrupting their existing phone service.

"The Call-in-One eliminates the awkwardness of other Voice-over-IP (VoIP) solutions, by combining free Internet calling with your traditional home phone service," says Michael Robertson, SiPphone.com's founder and CEO. "With Call-in-One you get the best of both worlds on your existing phone."

"For Internet-based calling to move into the mainstream, it needs to operate identically to the existing phone. People don't want to talk into a computer," says Michael Robertson, CEO of SIPphone.com. "Plus, with SiPphone, you can save hundreds of dollars a year in long distance and international calling."

The Call-in-One combines the convenience of a regular phone with the benefits of Internet telephony, including free worldwide calling, digital quality calls, voicemail delivered to email, free on-the-fly conference calling and more. Session Initiated Protocol, or SIP, is the new standard for VoIP service. Call-in-One combines the traditional phone service with its inevitable replacement, SIP VoIP service.

"The success of SiPphone.com signifies the broadband telephony service as a mature and cost effective communication solution that rivals the traditional telephony services," said K.S. Lu, CEO of Leadtek Research Inc. "SiPphone has done a great job in developing the Plug-N-Dial technology to remove the barriers that have limited the growth of VoIP. We are excited to be a contributor to the technology and a supplier of the Call-in-One."

Call-in-One makes it possible for millions of early adopters around the world to add Internet telephony, without losing their existing service or disturbing other home or office members.

One SiPphone.com beta user sent a Call-in-One to his sister in Switzerland.

"Now when I call her, she doesn't even know I am making a free call from my SiPphone, and she doesn't have to go searching for the 'other' phone," said Chris Lindland, an early SiPphone customer.

"I added Call-in-One without one complaint from my husband or daughters, since the phone works exactly as it did before," Gardner said. "The difference is now I can call my business partner in Japan for free on our regular telephone."

Call-in-One is about the size of a small hardback book, and plugs into a broadband connection and an existing phone line. The device uses SIPphone's Plug-N-Dial standard to automatically configure itself seconds after it is plugged in. There are no monthly or setup fees.

Call-in-One retails for $89.99 for a single unit and $84.99 when bough in pairs, and can be purchased from SiPphone.com's website. The unit is available immediately for domestic and international customers.